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Weekly Routing Table Report
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 25 May, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107404
Origin ASes present in the Internet Routing Table: 10929
Origin ASes announcing only one prefix: 3984
Transit ASes present in the Internet Routing Table: 1455
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 12
Non-routable prefixes present in the Routing Table: 1
Prefixes being announced from the IANA Reserved Address blocks: 1
Number of addresses announced to Internet: 1233069767
Equivalent to 73 /8s, 127 /16s and 38 /24s
Percentage of available address space announced: 33.3
Percentage of allocated address space announced: 64.1
Percentage of available address space allocated: 51.9
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16033
Prefixes being announced from the APNIC address blocks: 14563
APNIC Region origin ASes present in the Internet Routing Table: 1254
APNIC Region origin ASes announcing only one prefix: 440
APNIC Region transit ASes present in the Internet Routing Table: 207
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 72564802
Equivalent to 4 /8s, 83 /16s and 64 /24s
Percentage of available APNIC address space announced: 71.3
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239, 17408 - 18431
APNIC Address Blocks 61/8, 202/7, 210/7 and 218/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 74761
Prefixes being announced from the ARIN address blocks: 51334
ARIN Region origin ASes present in the Internet Routing Table: 6654
ARIN Region origin ASes announcing only one prefix: 1974
ARIN Region transit ASes present in the Internet Routing Table: 695
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 12
Number of ARIN addresses announced to Internet: 185144122
Equivalent to 11 /8s, 9 /16s and 19 /24s
Percentage of available ARIN address space announced: 84.9
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 22527
ARIN Address Blocks 63/8, 64/7, 66/8, 199/8, 200/8, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 16598
Prefixes being announced from the RIPE address blocks: 12969
RIPE Region origin ASes present in the Internet Routing Table: 3018
RIPE Region origin ASes announcing only one prefix: 1564
RIPE Region transit ASes present in the Internet Routing Table: 551
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 98700450
Equivalent to 5 /8s, 226 /16s and 12 /24s
Percentage of available RIPE address space announced: 65.4
RIPE AS Blocks 1877 - 1901, 2042, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /19 equiv Description
1221 1739 665 Telstra
2764 899 175 connect.com.au pty ltd
2907 365 884 SINET Japan
703 347 204 UUNET Technologies, Inc.
4755 340 110 VSNL India
4538 247 1049 China Education and Research
7539 206 91 TANet2, sponsored by NSC, TAI
4134 198 638 Data Communications Bureau
7474 192 86 Optus Communications
4740 185 12 Ozemail
4766 176 635 KORnet Powered BY Korea Telec
7657 162 13 The Internet Group Limited
7545 153 11 TPG Internet Pty Ltd
1237 152 70 System Engineering Research I
17561 151 68 Internet service provision to
9443 126 24 INTERNETPRIMUS-AS-A
4786 125 7 NetConnect Communications Pty
9394 125 18 CHINA RAILWAY TELECOMMUNICATI
7617 119 46 One.Net Pty Ltd
7586 116 5 Paradox Digital Pty. Ltd
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 625 852 UUNET Technologies, Inc.
15870 447 4 Global Center Frankfurt
3301 392 401 TeliaNet Sweden
1257 278 251 Swipnet AB
1270 262 440 UUNET Germany
680 227 1011 Deutschef Forschurgsnetz
3215 217 235 RAIN
719 186 146 LANLINK
786 186 952 JANET IP Service
5515 175 319 Sonera Finland
3320 163 709 Deutsche Telekom AG
5400 132 34 Concert Internet Plus Europea
517 128 136 Xlink
8708 126 7 Romania Data System
2856 117 388 BTnet UK Regional network
3303 116 279 Swisscom
1267 100 978 IUnet S.p.A
1290 98 203 PSINet UK Ltd.
1901 92 77 EUnet Austria
8342 88 44 Rostelecom Internet Center's
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2398 3758 UUNET Technologies, Inc.
7018 1853 3372 AT&T
705 1244 57 UUNET Technologies, Inc.
1 923 4458 BBN Planet
7046 796 564 UUNET Technologies, Inc.
3491 675 196 CAIS Internet
1239 656 1612 Sprint ICM-Inria
2914 587 1174 Verio, Inc.
3561 542 1216 Cable & Wireless USA
4293 497 51 Cable & Wireless USA
18994 474 5 Global Crossing
690 463 39 Merit Network
209 462 914 Qwest
2548 406 498 Digital Express Group, Inc.
3908 390 265 Supernet, Inc.
174 349 2597 PSINet Inc.
3549 345 524 Global Crossing
4323 340 140 Time Warner Communications, I
11371 337 50 Rhythms NetConnections
5106 336 67 Ameritech Advanced Data Servi
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2398 3758 UUNET Technologies, Inc.
7018 1853 3372 AT&T
1221 1739 665 Telstra
705 1244 57 UUNET Technologies, Inc.
1 923 4458 BBN Planet
2764 899 175 connect.com.au pty ltd
7046 796 564 UUNET Technologies, Inc.
3491 675 196 CAIS Internet
1239 656 1612 Sprint ICM-Inria
702 625 852 UUNET Technologies, Inc.
2914 587 1174 Verio, Inc.
3561 542 1216 Cable & Wireless USA
4293 497 51 Cable & Wireless USA
18994 474 5 Global Crossing
690 463 39 Merit Network
209 462 914 Qwest
15870 447 4 Global Center Frankfurt
2548 406 498 Digital Express Group, Inc.
3301 392 401 TeliaNet Sweden
3908 390 265 Supernet, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
60002 RESERVED 64.76.148.0/24 19583 IMPSAT CHILE S.A.
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
1877 UNALLOCATED 192.108.196.0/24 1800 SPRINT
1877 UNALLOCATED 192.108.209.0/24 1880 Stupi, house man's
1877 UNALLOCATED 192.108.210.0/24 1880 Stupi, house man's
1877 UNALLOCATED 192.108.214.0/24 1800 SPRINT
5757 UNALLOCATED 192.239.13.0/24 701 UUNET Technologies,
9242 UNALLOCATED 202.3.6.0/23 4515 Star Internet Servic
17441 UNALLOCATED 203.131.192.0/24 6347 SAVVIS Communication
65502 PRIVATE 203.166.83.0/24 10084 Western Australian I
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
172.16.0.1/32 703 UUNET Technologies, Inc.
Advertised IANA Reserved Addresses
----------------------------------
Network Origin AS Description
201.115.100.0/24 7018 AT&T
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:5 /10:6 /11:9 /12:31
/13:75 /14:206 /15:342 /16:6933 /17:1163 /18:2163
/19:6670 /20:5262 /21:4550 /22:6863 /23:8791 /24:61903
/25:263 /26:456 /27:459 /28:473 /29:389 /30:318
/31:1 /32:53
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:726 13:10 15:1 17:2 24:699
26:1 32:125 38:573 44:3 47:1 53:2
55:1 57:13 61:34 62:137 63:1975 64:1692
65:708 66:330 128:37 129:110 130:23 131:39
132:9 133:1 134:169 135:12 136:16 137:122
138:243 139:46 140:135 141:157 142:69 143:41
144:140 145:9 146:140 147:135 148:96 149:120
150:35 151:298 152:585 153:32 154:20 155:82
156:48 157:103 158:178 159:78 160:27 161:53
162:68 163:138 164:90 165:123 166:185 167:139
168:90 169:35 170:258 171:4 192:5433 193:1866
194:2041 195:743 196:401 198:3683 199:3401 200:2122
201:1 202:2457 203:4975 204:3365 205:2254 206:2836
207:2993 208:3033 209:3216 210:756 211:177 212:866
213:407 214:9 215:11 216:3038 217:245
End of report
-----
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